I worry about him cause he is 14, and am always looking for signs of physical decline.
I know his walking on 3 legs means he is going to have more mobility issues at some point.
But Gavin manages to surprise me (in a good way) every once in a while. This was definitely one of those times.
When he 'walks/hops' on 3 legs he is moving pretty fast, faster than I walk so I kind of had to jog a bit to keep up with him.
it is a funny site, me being pulled along by a dog hopping in a weird motion (since he does have all 4 legs, it looks very odd)
oddly enough, he was resistant to the tripod motion for a long time, and didn't start doing it for over a year after his leg problems
when he is moving slowly it is because he is using/limping on his fourth leg kinda like a crutch. that is what he does at home and it looks awful.